2138145219 has 24 divisors (see below), whose sum is σ = 3531290880. Its totient is φ = 1221224688.

The previous prime is 2138145209. The next prime is 2138145223. The reversal of 2138145219 is 9125418312.

2138145219 is a `hidden beast` number, since 21 + 381 + 45 + 219 = 666.

It is not a de Polignac number, because 2138145219 - 2⁵ = 2138145187 is a prime.

It is a super-2 number, since 2×2138145219² = 9143329955065115922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2138145209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153274 + ... + 166640.

It is an arithmetic number, because the mean of its divisors is an integer number (147137120).

Almost surely, 2^2138145219 is an apocalyptic number.

2138145219 is a deficient number, since it is larger than the sum of its proper divisors (1393145661).

2138145219 is a wasteful number, since it uses less digits than its factorization.

2138145219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15919 (or 15916 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2138145219 is about 46240.0823853072. The cubic root of 2138145219 is about 1288.2863327878.

The spelling of 2138145219 in words is "two billion, one hundred thirty-eight million, one hundred forty-five thousand, two hundred nineteen".